The results suggested that co‐transfection of pMIR‐MDK‐WT vector and miR‐188 mimic led to a significant decline in luciferase activity in cells, whereas other co‐transfection showed no major changes (Figure 3a), and MDK expression was increased in lung cancer tissues (Figure 3b) and was also elevated in the lung cancer cell lines (Figure 3c). The gene discussed is MDK; the disease is lung cancer.